<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/5_outerJS_JS.js"></script>
</head>
<body>
<button type="button" onclick="myFunction()">点击这里</button>
<script src="../js/5_outerJS_JS.js"></script>
</body>
</html>
<script src="../js/5_outerJS_JS.js"></script>